Prince Harry, 31, has become a viral sensation after teaming up with his 90-year-old grandmother, The Queen, to deliver a sassy new promo for the upcoming Invictus Games, and it's literally what dreams are made of!

You know that moment you get into a bit of a scrap, and you have to call on your family for back up?

Well, that's kind of what's happened here!

The genius Twitter video exchange sees Barack and Michelle standing with a crew of national servicemen as the First Lady says provocatively: "Hey Prince Harry! Remember when you told us to bring it at the Invictus Games?"

Barack then chimes in: "Careful what you wish for!"

Hilariously, the servicemen in the background say "BOOM!" before pulling a series of faces at the camera.